Furnace



June 29 ,1926; A1,590,379 f c. G. KAISER i FURNACE Filed March 5, 1925 2 Sheets-Sheet 1 mgmnu Patented June 29, 1926.

CHARLES e. KAlsER, or PORTLAND, OREGON.

scannen.

Application filed March 5, 19.25; serial no.' 13,153.

lviy invention relates to furnaces in general, and particularly to gas furnaces, the object being to provide a rfurnace that will util-izethe heat unitsY to better advantage than heretofore, and-that' shall be of simple and economical construction.

l? accomplish these objects by means of the construction illustrated in the accompanying drawings, which are a part of' this application for Letters Patent, like characters of reference indicating like parts throughout the several views thereof, and in which:

Fig. 1V is a perspective View of' my furnace, with parts broken away to illustrate the construction.

Fig. 2 is a sectional elevation 2 2 of Fig. 1f. f

F ig.' 3 is a sectional elevation upon line 3-3 ofI Fig. 1'.

Fig. 4 is a sectional plan upon line 4 4 of Fig. 2.

y Fig. 5 is a. fragmentary perspective view of the'front end of the combustion chamber' and exhaust flue.

in general my device consists of a combustionchamber having two horizontal parts connected with a vertical part; a chambered member surrounding said combustionl chamber and connected to the upper horizontal part thereof, with a space intermediate said combustion chamber and said chambered member, and having tubes passing through said latter chamber; an exhaust flue connected with the bottom of said chambered member opposite the side thereof connected with said combustion chamber; and a casing surrounding said chambered member, and spaced therefrom.

The combustion chamber is composed of a lower horizontal part 6, in which is located the gas burner, not shown in the drawings, which gas burner is supplied by apipe 7 an upper horizontal part 8, which is connected with a chambered member hereinafter to be described; and a vertical part 9 connecting the rear ends of said horizontal parts 6 and 8, as shown in Figs. 1 and 3.

The chambered member surrounding the combustion chamber is a box-like member composed of an inner wall 10 surrounding the combustion chamber and spaced therefrom as shown in Fig. 4; anA outer wall 11 surrounding said inner wall and spaced therefrom, as shown also in Fig. 4; and a top upon line wall 12 and bottom wall'13 closing each end horizontal part 8 thereof being connected with said chambered member aty the upperv4 portion of the'. front as shownY inl Figs. 1

and 3.

Each side portion of the chainbered'member is provided with` inclinedv tubes 15 as" shown inl Fig. 2 passing therethrough, and? each end portion' of said chfambered member is provided with vertical' tubes 1'6 passing therethrough assho'wn'in Figs. 1 and 3.

The rear portion'of said chambered member is connected at its bottomr by' piper'17 to a horizontal flue 18, which flue passes' beneath the lower horizontal part' of the coinbustion chamber, and at its front end connects with a chimneyv flue 19. AL water re'- ceptacle 20 surrounds the i'ue 18 for the pur'- posev of keeping water therein toc'ool' said flue, thus condensing anywater vapor that maybe in" the products of' combustion, and

utilizing to the utmost all heat' units inI the gas fuel.'

Anf outer casing 21 surrounds the entire` structure above described, and is spaced therefrom, as shown in Figs. 2, 3 and 4, and the heat is distributed from the dome thereof by suitable pipes 22.

The products of combustion pass upward in the combustion chamber through part 9 thereof, and enter the chambered member through part 8 of the combustion chamber. Thence they pass around through said chambered member heating the walls thereof and the tubes therein, and pass out therefrom by pipe 17 into the flue. 18, and finally out of the furnace by the chimney flue 19.

The air to be heated passes into the furnace at the bottom of the easing 21 and there divides, taking one of several passages throughthe furnace; part of the air passes directly up and is heated by the outer wall of the chambered member 11. Part passes beneath said chambered member and upward through the space between said chambered member and the combustion chamber. Part passes beneath the chambered member and upward through the verticaltubes 16 therein. And part passes from the space between the chambered member and the casing into the space between said chambered member and the combustion chamber by way of the inclined tubes 15, the streams of air thus directed impinoing upon the heated combustion chamber and thus being heated to a very high temperature.

'Ihe heated air passing through the several passageways just described is gathered at the top of the furnace by a hood 26 and thus directed into the furnace dome.

By this construction the heat units are nearly all extracted from the fuel and used to heat the air, and the products of combustion entering the chimney flue 19 are nearly cold.

My device may be constructed of any materials deemed convenient and suitable for a device o-f this character, and while I have illustrated and described a form of construetion and arrangement of parts found desirableV in materializing my invention, I wish to include in this application all mechanical equivalents and substitutes that may be fairly considered to come within the scope and purview of my invention as defined in the appended claims.

Having disclosed my invention so that others may be enabled to construct and to use the same, what I claim as new and desire to secure by Letters I atent is:

l. In a furnace; a combustion chamber; a chambered member surrounding` said com bastion chamber and spaced therefron'i; a casing surrounding said chambered member and spaced therefrom; and inclined tubes passing through said chambered member from the space between said chambered member and said casing to the space between said chambered member and said combustion chamber, and directed towardsV the latter.

2. In a furnace; a combustion chamber having two horizontal portions connected by a vertical portion; a flue beneath said lower Vertical portion; a water receptacle surrounding said flue; and a chambered member forming passageways for the products of combustion connecting,` said upper horizontal portion of the combustion'chamber with said flue.

3. In a furnace; a combustion chamber composed of an upper and lower horizontally positioned portions and a rearwardly disposed vertical portion connecting said horizontal portions; a chambered member surrounding said combustion chamber with a space intermediate the adjacent walls of said chamber and said member, the upper portion of said combustion chamber leading into said chamber-ed member; a flue beneath said combustion chamber; a pipe connecting said flue and said chambered member; and inclined tubes passing through asaid chambered member into said space'.

In a furnace; a combustion chamber composed ofa lower horizontal part, an upper horizontal part, and a vertical part connecting the rear ends of said horizontal parts; and a chambered member surrounding; said combustion chamber with a space between the adjacent walls of said chamber and said member; said member being connected to the forward end of said upper part of the combustion chamber.

In witness whereof I claim the foregoing as my own I hereunto affix my signature at Portland, county of Multnomah, State of Oregon, this 27th day of Feb., 1925.

CHARLES G. KAISER- 

